Electric fuse.



UNITED e STATES PATENT OFFICE.

HENRY N. SNYDER AND LEWIS A. HARDISON, OF SANTA PAULA, CALIFORNIA.

ELECTRIC FUSE.

Specification of Letters Patent.

Patented Sept. 19, 1905.

Application filed August 8,1904. Serial No. 219.926.

TO (LZZ whmn it mmoy conccrn:

Be it known that we, HENRY N. SNYDER and LEWIS A. HARDISON, citizens of the United States, residing at Santa Paula, in the county of Ventura and State of California, have invented certain new and useful Improvements in Electric Fuses; and we do declare the following to bea full, clear, and exact description ot' the invention, such as will enable others skilled in the art to which it appertains to make and use the same.

Our invention relates to improvements in mounts or holders for fusible conductors of electrio cut-outs, and particularly to that class of such devices in which the fuse is entirely inclosed and so mounted that it may be readily renewed When destroyed or damaged.

The object of our invention is to provide a device of this character which will be simple in Construction, durable in use, eificient in operation, and comparatively inexpensive to manufacture.

l/Vth the above and other objects in View the invention consists of certain novel features of Construction, combination, and arrangement of parts, as will be hereinafter more fully described, and particularly pointed out in the appended claim.

In the accompanying drawings, Figure 1 is a front elevation of our improved electric fuse. Fig. 2 is a longitudinal sectional view taken on the line 2 2 of Fig. 1. Fig. 3 is a transverse sectional view taken on the line 3 3 of Fig. 1, and Fig. 4: is a detail view of the fusesupport and its electric conductor-terminals.

Referring to the drawings by numeral, 1 denotes a tubular body constructed of glass or other non-conducting material and having its ends closed by caps 2 and 3. Said closures or caps 2 may be of any suitable material and constructed in any desired manner, so that the body l may be adapted to contain oil or other liquid. As shown in the drawings, we have tormed upon the ends of the body 1 screw-threads 4, which are engaged by screwthreads 5, stamped or otherwise formed in the caps 2 and 3. A packing in the form of a Washer of rubber or other suitable material is interposed between the ends of the tubular body and the caps in order to ettect a liquidtight joint or connection.

Disposed longitudinally within the bore of the body l is a hise-support 7, constructed of suitable non-conducting material and having secured at each of its ends a block 8, of porcelainorothernon-conductingmaterial. Riveted or otherwise secured, as at 9, to each of the blocks 8 is an electric conductor-terminal 10, which comprises a body portion 11 and a screw threaded stem 12, which projects through a central opening formcd in one of the caps or closures upon the ends of the body 1. Upon these outer screw-threaded ends 12 are packing-washers 13 and clamping-nuts 14:, which hold the fuse-support 7and its conductor-terminal 10 centrally within the body of the device. The fuse-support7 is preferably ot' Zigzag shape, as clearly shown in Fig. l, and is *formed with a longtudinally-disposed bore or passage 15, through which a fusible conductor 16 is adapted to pass. The ends of the fuse 16 are secured by washers 17 and screws 18 to the body portion 11 of the electric conductor-terminal 10. The space within the body l around the fuse-support 7 and the fuse 15 is adapted to be filled with a suitable oil or other liquid, (indicated at 19 in Fig. 2.)

The operation and advantages of our electric 'use will be readily understood from the foregoing description, taken in connection with the accompanying drawings, and it will be seen that when the fuse 16 is blown the parts may be readily separated and a new fuse placed in the support 7. By constructing said support 7 as shown and passing the fuse through the holes in the angular portions of the same said angular portions will interrupt the arc formed when the current is short-circuited.

While we have shown and described the preferred embodiment of our invention, it will be seen that we do not wish to be limited to the precise Construction herein set forth, since various changes in the form, proportion, and the minor details of Construction may be resorted to without departing from the principle or sacrificing any of the advantages of this invention.

Having thus described our invention, what We claim as new, and desire to secure by Letters Patent, is-

An electric fuse comprising a tubular body having screw-threaded ends, screw-caps for closing said ends, a zigzag fuse-support of non-conducting material within said body, said support 'having a longitudinal bore therethrough, electrical conductor-terminals secured upon the ends of said support and hav- TOO IOS

In testimony Whe'eof We have he'eunto set our hands in presence of two subscribng Wit- Io nosses.

HENRY N. SNYDER. LEVVIS A. HARDISON. VVitnesses:

J. H. SLOAN, A. J. BAKER. 

